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. Updated May 19, 2009. Accessed July 7, 2010.
Cove Point Foundation. Absent pulmonary valve. Helen B. Taussig Children’s Heart Center, Johns Hopkins University website. Available at:
. Accessed July 7, 2010.
DynaMed Editors. Evaluation of the infant for congenital heart disease. EBSCO DynaMed website. Available at:
. Updated April 14, 2010. Accessed July 7, 2010.
DynaMed Editors. Tetralogy of fallot. EBSCO DynaMed website. Available at:
. Updated June 10, 2010. Accessed July 20, 2010.
American Family Physician
American Heart Association
Canadian Cardiovascular Society
Heart and Stroke Foundation of Canada